I have been experiencing exactly the same problem since about a couple of week. I think this started after I upgraded some apparently unrelated package (I do not know which ones, sorry). Please let me know what I can to to help debugging this. I see this in ~/.xsession-errors, but I don't know if it's related:
** (gnome-panel:6335): WARNING **: No toplevel on which to load object '00000001' ** (gnome-panel:6335): WARNING **: No toplevel on which to load object '00000002' ** (gnome-panel:6335): WARNING **: No toplevel on which to load object '00000003' ** (gnome-panel:6335): WARNING **: No toplevel on which to load object '00000004' -- ciao, Marco -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

